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<h1>Zhiyuan Liu's Publications</h1> 
<h3>Thesis</h3> 
<ul> 
<li>PhD Thesis: Research on Keyword Extraction Using Document Topical Structure, 2011. (In Chinese) [<A HREF=publications/phd_thesis.pdf target=_blank>pdf</A>][<A HREF=publications/phd_slides.pdf>slides</A>]
<li>Master Thesis: Chinese Language Networks: Research and Applications, 2008. (In Chinese) [<A HREF=publications/master_thesis.pdf target=_blank>pdf</A>]
<li>Bachelor Thesis: Automatic Detection for IT New Terms, 2006. (In Chinese) [<A HREF=publications/bachelor_thesis.pdf target=_blank>pdf</A>] [<A HREF=publications/bachelor_thesis_slide.pdf target=_blank>slides</A>]
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<h3>Book Chapters</h3> 
<ol> 
<li><b>Zhiyuan Liu</b>, Edward Y. Chang. PLDA: Parallel Latent Dirichlet Allocation. A book chapter in <i>Foundation of Multimedia Information Retrieval</i>, Springer Press, 2010. (Its short version is published in ACM TIST.) [<A HREF="http://code.google.com/p/plda/">code</A>]
<li><b>Zhiyuan Liu</b>, Zhichao Li, Yiqun Liu. Content-based Retrieval and Its Algorithms. A book chapter in <i>Foundation of Search Engine Technologies</i>, Tsinghua Press, 2010. (In Chinese)
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<h3>Refereed Papers</h3> 
<ol> 
<h4>2011</h4> 
<li><b>Zhiyuan Liu</b>, Xinxiong Chen, Maosong Sun. A Simple Word Trigger Method for Social Tag Suggestion. <i>The Conference on Empirical Methods in Natural Language Processing (EMNLP'11)</i>. [<A HREF=publications/emnlp2011.pdf>pdf</A>]
<li><b>Zhiyuan Liu</b>*, Xinxiong Chen*, Yabin Zheng, Maosong Sun. Automatic Keyphrase Extraction by Bridging Vocabulary Gap. <i>The 15th Conference on Computational Natural Language Learning (CoNLL'11)</i>. [<A HREF=publications/conll2011.pdf>pdf</A>][<A HREF=datasets/163_chinese_news_dataset_2011.zip>data</A>] (* indicates equal contribution)
<li><b>Zhiyuan Liu</b>*, Yabin Zheng*, Lixing Xie, Maosong Sun, Liyun Ru. User Behaviors in Related Word Retrieval and New Word Detection: A Collaborative Perspective. <i>ACM Transactions on Asian Language Information Processing (ACM TALIP)</i> (Special Issue on Chinese Language Processing), 2011. [<A HREF=publications/acmtalip2011.pdf>pdf</A>] (* indicates equal contribution)
<li><b>Zhiyuan Liu</b>, Yuzhou Zhang, Edward Y. Chang, Maosong Sun. PLDA+: Parallel Latent Dirichlet Allocation with Data Placement and Pipeline Processing. <i>ACM Transactions on Intelligent Systems and Technology (ACM TIST)</i> (Special Issue on Large Scale Machine Learning), Vol. 2, No. 3, 2011. [<A HREF="http://code.google.com/p/plda/">code</A>][<A HREF=publications/acmtist2011.pdf>pdf</A>]
<li>Yabin Zheng, Lixing Xie, <b>Zhiyuan Liu</b>, Maosong Sun, Liyun Ru. Why Press Backspace? Understanding User Input Behaviors in Chinese Pinyin Input Method. <i>The 49th Annual Meeting of the Association for Computational Linguistics and Human Language Technologies (ACL-HLT'11)</i>, short paper.
<li>Lixing Xie, Yabin Zheng, <b>Zhiyuan Liu</b>, Maosong Sun, Canhui Wang. Extracting Chinese Abbreviation-definition Pairs from Anchor Texts. <i>The 10th International Conference on Machine Learning and Cybernetics (ICMLC'11)</i>, regular paper.
<li><b>Zhiyuan Liu</b>, Maosong Sun. Can Prior Knowledge Help Graph-based Methods for Keyword Extraction? <i>Frontiers of Electrical and Electronic Engineering in China</i>.
 
<h4>2010</h4> 
<li><b>Zhiyuan Liu</b>, Wenyi Huang, Yabin Zheng, Maosong Sun. Automatic Keyphrase Extraction via Topic Decomposition. <i>The Conference on Empirical Methods in Natural Language Processing (EMNLP'10)</i>, 2010. Oral presentation, acceptance rate = 25% (overall), 14% (oral), 11% (poster). [<A HREF=publications/emnlp2010.pdf>pdf</A>]
<li><b>Zhiyuan Liu</b>, Maosong Sun. Domain-Specific Term Rankings Using Topic Models. <i>The Sixth Asia Information Retrieval Society Conference (AIRS'10)</i>, 2010. Full paper, acceptance rate = 22% (full paper), 28% (poster paper).
<li><b>Zhiyuan Liu</b>, Chuan Shi, Maosong Sun. FolkDiffusion: A Graph-based Tag Suggestion Method for Folksonomies. <i>The Sixth Asia Information Retrieval Society Conference (AIRS'10)</i>, 2010. Poster paper, acceptance rate = 22% (full paper), 28% (poster paper).
<li>Xiance Si, <b>Zhiyuan Liu</b>, Maosong Sun. Modeling Social Annotations via Latent Reason Identification. <i>IEEE Intelligent Systems</i>, 2010.
<li>Xiance Si, <b>Zhiyuan Liu</b>, Maosong Sun. Exploring Subsumption Relations in Social Tags. <i>The 23rd International Conference on Computational Linguistics (COLING'10)</i>, 2010. Regular paper, acceptance rate = 19% (158 of 815). [<A HREF=publications/coling2010.pdf>pdf</A>]
<li>Yabin Zheng, <b>Zhiyuan Liu</b>, Lixing Xie. Growing Related Words from Seed via User Behaviors: A Re-ranking Based Approach. <i>ACL Student Research Workshop</i>, 2010. Poster paper. [<A HREF=publications/acl2010_srw.pdf>pdf</A>]
 
<h4>2009</h4> 
<li>Xiance Si, <b>Zhiyuan Liu</b>, Peng Li, Qixia Jiang, Maosong Sun. Content-based and Graph-based Tag Suggestion. <i>ECML/PKDD Discovery Challenge Workshop (RSDC'09)</i>, 2009. Regular paper. [<A HREF=publications/dc2009.pdf>pdf</A>]
<li>Yabin Zheng, <b>Zhiyuan Liu</b>, Shaohua Teng, Maosong Sun. Efficient Text Classification Using Term Projection. <i>The 5th Asia Information Retrieval Symposium (AIRS'09)</i>, 2009. Poster paper, acceptance rate = 27%. [<A HREF=publications/airs2009.pdf>pdf</A>]
<li><b>Zhiyuan Liu</b>, Peng Li, Yabin Zheng, Maosong Sun. Clustering to Find Exemplar Terms for Keyphrase Extraction. <i>The Conference on Empirical Methods in Natural Language Processing (EMNLP'09)</i>, 2009. Regular paper, acceptance rate = 22.5% (108 of 478). [<A HREF=publications/emnlp2009.pdf>pdf</A>] 
<li>Yabin Zheng, <b>Zhiyuan Liu</b>, Maosong Sun, Liyun Ru, Yang Zhang. Incorporating User Behaviors in New Word Detection. <i>The 21st International Joint Conference on Artificial Intelligence (IJCAI'09)</i>, 2009. Oral paper, acceptance rate = 25.7% (331 of 1,290). [<A HREF=publications/ijcai2009.pdf>pdf</A>]
<li><b>Zhiyuan Liu</b>, Yabin Zheng, Maosong Sun. Quantifying Asymmetric Semantic Relations from Query Logs by Resource Allocation. <i>The 13th Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD'09)</i>, 2009. Regular paper, acceptance rate = 11.54% (39 of 338). [<A HREF=publications/pakdd2009.pdf>pdf</A>]
 
<h4>2008</h4> 
<li>Yabin Zheng, Jiawei Cao, <b>Zhiyuan Liu</b>, Maosong Sun. Couplet System Based on Maximum Matching and Markov Model. <i>The 4th Students' Workshop on Computational Linguistics (SWCL'08)</i>, 2008. (In Chinese) [<A HREF=publications/swcl2008.pdf>pdf</A>]
<li>Yabin Zheng, Shaohua Teng, <b>Zhiyuan Liu</b>, Maosong Sun. Text Classification Based on Transfer Learning and Self-Training. <i>The 4th International Conference on Natural Computation (ICNC'08)</i>, 2008. [<A HREF=publications/icnc.pdf>pdf</A>]
<li><b>Zhiyuan Liu</b>, Maosong Sun. Asymmetrical Query Recommendation Method Based on Network-resource-allocation Dynamics. <i>The 17th International World Wide Web Conference (WWW'08)</i>, 2008. Poster paper. [<A HREF=publications/asymmetrical_query_recommendation_method_www2008.pdf>pdf</A>] [<A HREF=datasets/qr.zip>data</A>]
<li><b>Zhiyuan Liu</b>, Yabin Zheng, Maosong Sun. Complex Network Properties of Chinese Syntactic Dependency Network. <i>Journal of Complex Systems and Complexity Science</i>, Vol. 5, No. 2, pp. 37-45, 2008. (In Chinese) [<A HREF=publications/chinese_syntactic_dependency_network_cscs2008.pdf>pdf</A>]
 
<h4>2007</h4> 
<li><b>Zhiyuan Liu</b>, Maosong Sun. Chinese Word Co-occurrence Network: Its Small World Effect and Scale-free Property. <i>Journal of Chinese Information Processing</i>, Vol. 21, No. 6, pp. 52-57, 2007. (In Chinese) [<A HREF=publications/chinese_cooccurrence_small_world2007.pdf>pdf</A>]
<li>Yabin Zheng, <b>Zhiyuan Liu</b>, Maosong Sun. Statistical Features of Chinese Song Lyrics and Its Application to Retrieval. <i>The 9th Chinese National Conference on Computational Linguistics (CNCCL'07)</i>. <i>Journal of Chinese Information Processing</i>, Vol. 21, No. 5, pp. 61-67, 2007. (In Chinese) [<A HREF=publications/chinese_lyrics_cnccl2007.pdf target=_blank>pdf</A>]
<li><b>Zhiyuan Liu</b>, Xiance Si, Yabin Zheng, Maosong Sun. Statistical Properties of Tagging System on Chinese Blogs. <i>International Conference on Chinese Computing (ICCC'07)</i>, 2007. (In Chinese) [<A HREF=publications/chinese_blog_tag_iccc2007.pdf>pdf</A>]
<li><b>Zhiyuan Liu</b>, Maosong Sun. Web-Based Automatic Detection for IT New Terms. <i>The 9th Chinese National Conference on Computational Linguistics (CNCCL'07)</i>, 2007. (In Chinese) [<A HREF=publications/web_based_new_term_detection_cnccl2007.pdf target=_blank>pdf</A>]
</ol> 
 
<h3>Patents</h3> 
<ol> 
<li><b>Zhiyuan Liu</b>, Yuzhou Zhang, Edward Y. Chang. Parallel Generation of Topics From Documents. PCT/CN2011/000825.
<li>Yi Wang, <b>Zhiyuan Liu</b>. Category-Sensitive Ranking for Text. PCT/CN2009/001584.
<li>Yabin Zheng, <b>Zhiyuan Liu</b>, Maosong Sun, Liyun Ru, Yang Zhang. An Algorithm and A Device for Detecting New Terms. Application No.: 200910083143.2. Public No.: CN101539940. [<A HREF="http://search.sipo.gov.cn/sipo/zljs/hyjs-yx-new.jsp?recid=CN200910083143.2&leixin=fmzl&title=%E8%8E%B7%E5%8F%96%E6%96%B0%E8%AF%8D%E7%9A%84%E6%96%B9%E6%B3%95%E5%92%8C%E8%A3%85%E7%BD%AE&ipc=G06F17/30%282006.01%29I">link</A>]
</ol> 
 
<h3>Articles</h3> 
<ol> 
<li><b>Zhiyuan Liu</b>, Shaoping Ma. Natural Language Processing. <a href="http://www.10000nt.cn/">10000 Puzzles in Science</a>. (In Chinese)
</ol> 
 
<h3>Technical Reports</h3> 
<ol> 
<li><b>Zhiyuan Liu</b>, Peng Li, Yabin Zheng, Maosong Sun. Community Detection by Affinity Propagation. <i>Technical Reports No. 001</i>, 2008.[<A HREF=techreports/TR001_thunlp_community_detection.pdf target=_blank>pdf</A>]
</ol> 
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